I don't think lack of traction with cold is the issue. I don't run those tires but even at -18c I don't see unexpected traction control activation and below freezing I run the TC in the most sensitive mode to give me more warning of lack of traction because of ice.I have run Shinko 804/805, and PR3's and noticed no difference in traction control function. Did you just put these on? is it still cold where you are located?
The Karoo is a 50/50 tire though, I have Shinko 804/805 and if it's under 5c, TC2 and I come on to it , even 1/2 throttle the light is blinking. I do not detect ANY slipping, it feels solid but the light blinks. I'm also not sure how you could install the abs sensor incorrectly, it really only goes one way. It is possible though that they didn't remove it and smacked it with the disc. I never remove mine but I know it's there and I wiggle out around it easily but I could see someone thinking the tire is caught on something and pulling on it. I think that would generate an error thoughI don't think lack of traction with cold is the issue. I don't run those tires but even at -18c I don't see unexpected traction control activation and below freezing I run the TC in the most sensitive mode to give me more warning of lack of traction because of ice.
I would want to check that the abs sensors on each wheel are properly installed (since they need to be removed when changing tires.)
It may be possible that there is mold release making the tires more slippery (but I doubt that's the issue) and if so it should stop being an issue after some riding takes it off.
If not any of the above I would want to ask around if anyone else has had issues with that combination of tires and TC. It could be the tire profile makes enough change for the system to think one wheel is running slow enough that there is slippage going on.
They are a taller tire for sure, I had to buy a fender raising kit from adventuretech because they would rub onthe fender at highway speeds. Marked up my fender pretty good and i'm sure took some life off the tire haha.There must be something going on size wise that makes the TC think it is starting to slip. Perhaps there is a bit of difference in actual diameter between the front and back that, when cold, gets magnified making it easier for the system to think it's slipping.
That or those tires really sick in the cold (which I doubt!)
Just for the benefit of any newer riders or folks with little or no experience with TC who may come along and read this thread later... TC2 is absolutely not useless. In fact, I ride with TC2 virtually 100% of the time as I don't ride in dirt/gravel and I don't ride very aggressively. I've activated it a small handful of times when I was overzealous with the throttle and it probably helped keep things under control which is exactly what it's supposed to do.TC2 is useless in my eyes. Maybe it works on wet roads sometimes, but do not try to use it off-road, all you will end up doing is repeatedly stalling the engine.
The tires are not necessarily the issue here, although of course, trying use street tires in mud with TC2 is going to end badly every time.
I have my TC turned off all the time these days.
My gut says it isn't doing that, just checking to see that the sensors are getting a reading. (But I don't actually know.) IYes but also in both cases those first few wheel revolutions after you turn the key on are used to work out what the ratio of front wheel to rear wheel ticks is.
Thanks for explaining in detail! It is pretty much as I understood (but don't have the technical training you have to be able to explain in detail.)...
The ABS control unit logic has a set parameter for that ratio. That parameter is wide enough in range to take into account the differences in tire diameters--to a point. Outside of that range, you have a TC/ABS malfunction indicator lamp on with a diagnostic trouble code stored in the control unit's memory.
IIRC they were 2014-2016 (17?) DL1000's. There are ABS sensor rings on both wheels and I've been told the Speedo gets its speed reading from them.V-Tom, are these other people all riding Vstroms? If so, can you give a general year range?
It could happen depending on where the ABS control unit gets its speed signal from. For the front it could be the speedometer driven by a cable, or a sensor rotor.
For the rear the signal could be generated off the sensor rotor or a counter shaft sprocket sensor.
I can see how a change in diameters between the front and rear tires could trigger a light, but also can see how a gear ratio change could trigger a light as well. The rpm for a given road speed difference with a final drive gearing change could do that.
That's what I would have thought. I wonder if tire changes accompanied the sprocket changes.V-Tom, no info here on ABS wheel speed detection strategy, but as the control unit compares both, I would think that it needs to see both to make a judgement.
For engine speed, looking in the ABS section of the service manual neither the wiring diagram nor 3 schematics show any correlation between engine rpm or transmission gear. So it appears that everything depends on the wheel speed sensors.
You have your 3 (+) fuses, battery, ignition switch, and wheel speed sensors as inputs. I see nothing ignition-related (rpm) as an input to the control unit.